BIRDS OF NORTH AND MIDDLE AMERICA 235 



or less success. Several of the smaller and less ornamental species have 

 also been introduced but, for the most part at least, with unsatisfactory 

 results. 



The following "key" to the genera includes only those that are native 

 to our region or that have been introduced into North America. One 

 of the genera is known only in a domesticated state as far as our region 

 is concerned and therefore will not be further noticed in this work. 



KEY TO THE NOETH AND MIDDLE AMERICAN GENERA OF PHASIANIDABi» 



a. Mandibular tomium serrated or toothed (Odontophorinae). 

 'b. Rectrices 12-14; tarsus little if any longer (usually shorter) than middle toe 

 with claw; claws medium-sized to large, the longest as long as or longer 

 than second phalanx of middle toe; chord of culmen much shorter than 

 combined length of first and second phalanges of middle toe; planta tarsi 

 with more than 2 definite rows of scutella, or else if only 2 definite rows 

 the remaining scutella of planta tarsal area much smaller. 

 c. Tips of lateral claws extending little if any beyond base of middle claw, 

 the claws not noticeably elongated (that of middle toe usually much 

 less than one-third as long as tarsus) ; tail moderately long to very long, 

 always more than half as long as wing, its tip reaching to or beyond 

 extremities of outstretched feet. 

 d. Tarsus decidedly less than one-third as long as wing; outermost primary 

 not longer than ninth (from outside), usually longer than eighth. 

 e. Tail less than three-fifths as long as wing. 

 /. Scapulars, tertials, and rump spotted; flanks spotted or striped, not 

 banded; chest never plain slate-gray; crest (if obvious) always 

 shorter than head; sexes more or less different in color (coloration 

 of head always different); smaller (wing less than 110 mm.). 



Colinus (p. 305) 



//. Scapulars, tertials, and rump unspotted; flanks banded with chestnut, 



white, and black; chest plain slate-gray; a conspicuous crest of 



2 slender much-elongated plumes; sexes alike in color; larger 



(wing 130-140 mm.) Oreortyx (p. 2S3) 



ee. Tail more than three-fifths as long as wing. 



/. Tail less than two-thirds as long as wing; scapulars and tertials 

 spotted; sides and Ranks banded with black and white. 



Philortyx (p. 272) 

 //. Tail more than two-thirds as long as wing; scapulars and tertials 

 unspotted ; sides and flanks not barred. 

 g. Tail three-fourths as long as wing, or more, of 12 rectrices; crest 

 longer, club-shaped, its plumes narrower basally, more rigid, 

 their webs conduplicate ; chest not squamated; sexes conspicu- 

 ously different in color Lophortyx (p. 275) 



gg. Tail less than three- fourths as long as wing, with 14 rectrices; 

 crest shorter, bushy, its plumes broad, softer and blended, their 

 webs not conduplicate; chest conspicuously squamated; sexes 

 alike in color .Callipepla (p. 264) 



" Including introduced genera. 



